Atomic Energy Regulatory Board has slapped a notice on Delhi University to explain how safety rules were violated after the radiation exposure in a Delhi scrap market was traced to its Chemistry Department. The University has constituted a three member committee to probe the mishandling of radioactive substance Cobalt 60. <br/> The University Vice Chancellor, Deepak Pental has admitted the lapse and took moral responsibility for the incident. He said that the University will provide compensation to those affected by the radiation leakage. Prof Pental claimed that the University miscalculated the life of the radioactive substance and auctioned it off. He said that the government is already investigating the matter and there is a need to reach the bottom of the lapse. Panic had gripped Mayapuri in the first week of April when 11 people were admitted to hospitals after they were exposed to radiation in a scrap market. A worker in the scrap shop from where the Cobalt 60 was discovered had also died due to exposure to radiation.<br/>